JP2001037566A - Base of furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base of furniture which has good mobility while maintaining a useful stacking efficiency, without reducing leg space at a service end. SOLUTION: The caster body 41 of a first caster 4 supporting the front end 3a of a base body 3 is attached to the inside of a first caster attaching part 6 while in an enclosed state, and the caster body 51 of a second caster 5 supporting the rear end 3b of the base body 3 is attached to the outside of a second caster attaching part 7 while in an exposed state. Further, the height position of the first caster attaching part 6 is lower than that of the second caster attaching part 7 and the horizontal width of the second caster attaching part 7 on plan view is smaller than that of the first caster attaching part 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furniture base suitably used for movable furniture.

[0002]

2. Description of the Related Art For example, as a base used for furniture such as a movable table or chair, a pair of left and right base bodies and a pair of casters for supporting the front and rear ends of each base body movably with respect to a floor surface. Some are provided with: As this type of caster, for example, a two-wheel caster is generally used.

[0003] The twin-wheel caster includes a support shaft hanging down from a lower surface of a base body, and a caster body attached to a lower end of the support shaft. The caster main body includes a pair of traveling wheels that rotate around a horizontal axis, and a rotating unit that supports the wheels so as to be rotatable around a vertical axis.
Since the diameter of the wheels of the two-wheel caster is set so as to be able to get over obstacles of a certain size, for example, even when traveling on a carpet with a long bristle, the carpet is fixed to the wheels. Effectively preventing entanglement,
In addition, good running is possible, for example, the vehicle can easily get over a step.

In addition to these two-wheel casters, in recent years,
A low floor caster having a flat shape (also called a flat caster or the like) has been used. The low-floor caster includes a support having a bottomed cylindrical shape with an open lower surface attached to the base body, and a caster body accommodated in the support. The caster body includes a disk-shaped rotating portion accommodated in the support member so as to be rotatable around a vertical axis, and a pair of traveling books attached to the rotating portion so as to be rotatable around a horizontal axis. The vehicle further includes a wheel, and an auxiliary wheel for moving over an obstacle, which is also mounted on the rotating portion so as to be rotatable around a horizontal axis and floats above a floor surface during traveling.

[0005] Since this low-floor caster is thin, the height of the base can be kept low and the space for the lower limbs can be expanded. Conventionally, one of these twin-wheel casters and low-floor casters was selected, and the front and rear ends of the base body were usually supported by the same casters.

[0006]

However, although the two-wheel caster has good mobility, it requires a fixed wheel diameter to overcome obstacles, so that the mounting position of the caster increases, and accordingly, The height position of the base is also high. Therefore, for example, when this base is used for a table, a chair, or the like, problems such as narrowing of the lower limb space occur.

On the other hand, since the low-floor casters are thin, for example, when running on a carpet with long hairs, the casters are buried in the carpet, so that it is difficult to run stably, and it is difficult to get over a step. There is a problem. As described above, the base using the two-wheel casters has a problem that the space for the lower limbs of furniture is narrowed, while the base using the low-floor casters has a problem in running properties such as difficulty in getting over a step. Therefore, it is desired to provide a base capable of realizing both effective lower limb space and good running performance.

[0008]

[Means for Solving the Problems] Based on the above-mentioned problems,
The invention of the present application provides the first caster supporting the use end side of the furniture with the advantage unique to the low floor caster capable of securing an effective lower limb space, and the second caster supporting the non-use end side as a running caster. A structure that can provide the advantages unique to the two-wheel caster that can improve the performance, and that provides a base that can achieve both effective lower limb space at the use end side and good running performance. is there.

By the way, the above-described twin-wheel caster and low-floor caster seem at first glance to have different configurations, but in each case, a wheel that rotates around a horizontal axis and a wheel that rotates around a vertical axis. It comprises a caster main body having a rotatable rotating portion and a support for fixing the caster main body to the base main body, and has substantially the same functional configuration. However, the base using these casters has the advantage that the former has good running performance, and the latter has the advantage that it secures an effective lower limb space. Thus, the advantage of the base using these casters is not provided by the configuration specific to each caster, but is basically an advantage caused by the difference in the mounting state of each caster to the base body. Conceivable. That is, since the two-wheel caster is mounted with the caster main body exposed outside the base main body, it is possible to increase the diameter of the wheels and improve the traveling performance. On the other hand, the low-floor casters are mounted in a state where the caster main body is accommodated in the base main body, so that it is considered that the height position of the base main body can be reduced. Focusing on this point, the present invention accommodates the caster main body of the first caster that supports the use end side in the base main body to secure an effective lower limb space on the use end side, and The caster main body of the second caster supporting the base is exposed to the outside of the base main body so that the diameter of the wheel can get over an obstacle, thereby providing a base capable of achieving good traveling performance.

[0010] Further, in the case of a low-floor caster mounted in the base body in a housed state, it is necessary to set the left and right width dimensions of the base body so as not to hinder the rotation of the caster body about the vertical axis. When a base using floor casters is applied to furniture that can be stacked, stack efficiency has been reduced. The present invention pays attention to this point and devises the shape of the base body in a plan view. Even if the caster body of the first caster on the use end side is mounted in the base body, the stack is effective. It provides a base that can maintain efficiency.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a furniture base capable of supporting a furniture main body movably with respect to a floor surface, the first base supporting a base body and a use end side of the base body. A caster, and a second caster for supporting a non-use end side of the base body, wherein the first and second casters rotate around a horizontal axis and a vertical axis And first and second caster bodies each having a rotating portion rotatably supported about a center thereof, wherein at least a part of the first caster body is provided on the base body. The first caster body is attached in a state of being housed therein, and the base body to which the first caster body is attached has a left-right width dimension that does not hinder rotation of the first caster body around a vertical axis. As well as the height from the non-use end side The second caster body is set to be lower and mounted in a state where the second caster body is exposed to the outside. Furniture base characterized by being narrow.

With such a configuration, the first caster main body is mounted in a state of being housed inside the base main body, so that the height of the base main body on the use end side can be suppressed low. . Therefore, it is possible to secure a large space for the lower limbs on the use end side of the furniture, and it is possible to reduce the risk of the user getting caught on the use end of the base. Furthermore, since the second caster main body on the non-use end side is exposed to the outside of the base main body and mounted, the wheel diameter of the second caster main body can be freely set, and the obstacle can be overcome. It can be as large as possible. And this way, for example,
When traveling on a carpet with long bristle feet, etc., stable traveling is possible. In addition, if the second caster side is positioned in the forward direction in the traveling direction when moving, the first caster can be used. Difficult steps can also be overcome first by the second caster.

On the other hand, since the first caster main body is mounted in a housed state inside the use end side of the base main body, the left and right width dimensions of the mounting portion are adjusted around the vertical axis of the caster main body. The left and right widths of the base body at the use end side are wide. Therefore, if the left and right widths of the entire base body are set in accordance with the width dimension on the use end side, when the base is applied to stackable furniture, there is a possibility that the stacking efficiency is reduced. However, in the base of the present invention, the width dimension on the left and right sides on the non-use end side is narrower than that on the use end side, so that effective stacking efficiency can be maintained. In addition, the maintenance of the effective stack efficiency can be realized by a simple stack operation in which the bases are directly overlapped with each other. In particular, if the non-use end side of the base body, that is, the narrow side is the front side in the traveling direction, and the base of one furniture side is made to penetrate the base of the other furniture side, movement and intrusion operation It is easy to perform and has good mobility.

In order to improve the traveling performance, it is desirable that the wheels of the second caster body have a larger diameter than the wheels of the first caster body. As a preferred embodiment of the base body, there is one in which the non-use end side of the base body has substantially the same left and right width dimensions continuously. In order to make the lower limb space wider on the use end side, the base body includes a furniture main body support portion for supporting the furniture main body between the use end and the non-use end, and the furniture main body support portion is provided from the use end side. It is preferable that the height position of the upper surface is substantially horizontal toward the portion.

In a preferred embodiment of the first caster, the first caster includes a first support for fixing the first caster main body to the base main body. The body and the rotating part of the first caster main body are mutually rotatable around a vertical axis, and one of them is cup-shaped, and the other is at least a part of the one. Disc-shaped ones accommodated on the side.

[0016] In order to improve the state of attachment of the first caster, it is desirable that the first support is a cup-shaped one whose lower surface is open and whose inner peripheral surface is at least circular. In order to be able to get over obstacles of a certain size even if the wheels are made small and the casters are made thin, a first caster is mounted on the rotating part so as to be rotatable around a horizontal axis. It is preferable to have an auxiliary wheel for riding on an obstacle.

As a preferred embodiment of the first caster, there is a low caster having a flat shape. In order to reduce the mounting area of the second caster in the base body and improve stacking efficiency, the second caster includes a second support for fixing the second caster body to the base body. It is preferable that the second support is a support shaft hanging down from the base body, and the lower end of the second support is rotatably mounted around a vertical axis.

A preferred embodiment of the second caster is a twin wheel caster having a pair of wheels of a single diameter.

[0019]

An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, a case will be described in which the furniture base of the present invention is applied to a table A capable of flap operation. As shown in FIGS. 1 and 2, the table A includes a pair of left and right bases 1 and a table body 2 that is a furniture body supported by the bases 1.

The table body 2 includes left and right columns 21 erected from the base 1 in a forwardly inclined posture, and left and right columns 21.
The horizontal member 22 connecting the space and the standing position Q from the use position P
And a top plate 23 supported by the left and right columns 21 so as to be capable of flap operation. Then, as shown in FIG. 3, in a state where the top plate 23 is held at the upright position Q, the table 1 and the bases 1 of the other tables A are partially overlapped and stacked. I have.

The top plate 23 has a substantially rectangular shape in a plan view, and is substantially parallel to a use position P substantially parallel to a floor surface F shown by a solid line in FIG. 2 and a column 21 shown by an imaginary line in FIG. The left and right ends are rotatably supported by the vicinity of the upper end of the column 21 so that a flap operation can be performed between the standing position Q and the standing position Q. Further, the top plate 23 is locked at the use position P or the upright position Q by a not-shown top plate lock mechanism having a known configuration.

As shown in FIGS. 1 to 5, the base 1 includes a base body 3, a first caster 4 for supporting a front end 3a, which is a use end of the base body 3, and a rear end, which is a non-use end. 3
and a second caster 5 supporting the b side. The base body 3 is, as shown in FIGS.
A first caster mounting portion 6 disposed on the front end 3a side of the base body 3 and mounting the first caster 4 thereon; and a second caster mounting portion 6 disposed on the rear end 3b side of the base body 3 and mounting the second caster 5 thereon. A caster mounting portion 7, a connecting portion 9 for connecting the first caster mounting portion 6 and the second caster mounting portion 7, and a pillar support as a furniture main body supporting portion provided near the rear end of the connecting portion 9. Unit 8.

In this embodiment, in this embodiment, at least a part of the caster body 41 of the first caster 4 is mounted in a state of being housed inside the first caster mounting portion 6, and The first caster mounting portion 6 has a left-right width dimension which does not hinder the rotation of the first caster main body 41 about the vertical axis, and the height thereof is set to the second caster mounting portion 7. The second caster main body 51 is mounted in a state where the second caster main body 51 is exposed to the outside of the second caster mounting portion 7, and the shape of the second caster mounting portion 7 in plan view is changed to the first caster mounting portion. It is narrower than the part 6.

The specific configuration of each section will be described in detail below. The first caster 4 is, as shown in FIGS.
It is a well-known low floor caster. Specifically, the first caster 4 includes a first caster main body 41 and a case 42 serving as a first support for fixing the first caster main body 41 to the first caster mounting portion 6. I have it.

The first caster main body 41 has a pair of main wheels 411 for traveling which rotate around the horizontal axis, and an obstacle which is smaller in diameter than the main wheels 411 and which floats from the floor F during traveling. An auxiliary wheel 412 for overcoming and the main wheel 4
And a pedestal 413 serving as a rotating portion for supporting the rotating wheel 11 and the auxiliary wheels 412 about a vertical axis. The main wheel 411 is provided at a position offset from the axis of the pedestal 413 to one side, and the auxiliary wheel 412 is provided at a position offset from the axis of the pedestal 413 to the other side.
Numeral 2 is configured to be always located on the front side in the traveling direction with respect to the main wheels 411 during traveling due to the rotation of the pedestal 413 about the vertical axis so as to be able to get over an obstacle. Pedestal 4
Reference numeral 13 denotes a disk-shaped member which is housed in a bottomed cylindrical case 42 having a slightly larger width than the pedestal 413, and which is not shown, has an outer surface of its side wall and the case 42.
The case 42 is attached to the case 42 so as to be rotatable around a vertical axis by a plurality of balls interposed between the case 42 and the inner surface of the side wall. Although not shown, the first caster 4 includes a lock mechanism that can lock the rotation of the main wheel 411 and the rotation of the pedestal 413 at the same time. , An operation button for operating the lock mechanism.

The second caster 5 is a well-known two-wheel caster having a wheel 511 larger in diameter than the main wheel 411 of the first caster 4. Specifically, the second caster 5 includes a second caster main body 51 and a support shaft 52 serving as a second support for fixing the second caster main body 51 to the second caster mounting portion 7. I have it. The second caster main body 51 includes a pair of traveling wheels 511 having the same diameter that rotates around a horizontal axis, and a rotating unit 512 that supports the wheels 511 so as to rotate around a vertical axis. I have it. The rotating portion 512 includes a cylindrical bearing 512 a provided at the lower end of the support shaft 52 via a bearing (not shown) so as to be rotatable around a vertical axis, and the bearing 512 a
A cover 512b provided integrally at the lower end of the cover and covering the wheel 511, and a support portion (not shown) provided integrally with the cover 512b and rotatably supporting the wheel 511
Is provided.

The support shaft 52 has a thread groove formed on the outer periphery thereof, and is screwed and mounted on a nut 72 provided on the second caster mounting portion 7. The first caster mounting part 6 includes:
The left and right width dimensions of the plan view shape are set so as not to hinder the rotation of the first caster main body 41 around the vertical axis. Specifically, the mounting plate for mounting the first caster 4 61 and the first caster 4 on the mounting plate 61.
And a top cover 63 capable of covering the mounting plate 61 with the first caster 4 mounted thereon from above. Become. The mounting plate 61 has a thin plate shape, and its base end is attached to a lower end side of the left and right side walls 92 of the connecting portion 9 by appropriate means such as welding. When the first caster 4 is mounted on the mounting plate 61, the case 42 is inserted into the opening 62, and the upper end of the case 42 is protruded from the upper surface of the mounting plate 61, and the case 42 is appropriately mounted. At mounting plate 61
Fixed to. Then, the upper cover 63 is covered from above so as to cover the mounting plate 61 to which the first casters 4 are mounted, and is fixed by appropriate means.

The second caster mounting portion 7 has a mounting wall 7 disposed at a position deviated upward from the top wall 91 of the connecting portion 9.
1, the second wall provided on the lower surface on the rear end side of the mounting wall 71.
A nut portion 72 that can be screwed with the support shaft 52 of the caster 5 of
An insertion hole 73 formed in the mounting wall 71 so that the screw hole of the nut portion 72 is aligned with the axis thereof, and an upper cover 74 mounted from above so as to cover the mounting wall 71 from the outside.
And The mounting wall 71 is a plate-like member that extends substantially rearward from a rear-standing wall 823 of a fitting portion 82 of the support column 8 to be described later in a substantially horizontal direction, and an outer surface of the rear-standing wall 823. And a rib r for reinforcement is provided between the lower surfaces of the mounting walls 71. The mounting wall 71 has a second
When the caster 5 is mounted, the support shaft 52 is screwed to the nut 72. Then, the upper cover 74 is mounted from above so as to conceal the mounting wall 71 on which the second caster 5 is mounted from the outside, and is fixed to the mounting position by appropriate means. Then, with the upper cover 74 attached,
The left and right widths of the second caster mounting portion 7 are narrower than the left and right widths of the first caster mounting portion 6.
The upper cover 74 integrally includes an opening 741a through which the lower end 21a of the column 21 can be inserted, and a concealing portion 741b that conceals a connection portion between the column 21 and the connecting portion 9 from the outside. Have.

The connecting portion 9 is a substantially U-shaped member having an open lower surface, and has a top wall 91 having a substantially constant left and right width dimension from a front end 9a to a rear end 9b, and a left and right end of the top wall 91. Left and right side walls 92 are provided. Further, the connecting portion 9 is a substantially horizontal one in which the height position of the upper surface 9c thereof is substantially constant from the front end 9a to the rear end 9b, and has the column support portion 8 near the rear end 9b. ing. The connecting portion 9 is narrower in width than the left and right widths of the first caster mounting portion 6 and has substantially the same left and right widths as that of the second caster mounting portion 7. Further, the first caster mounting portion 6 described above is provided on the upper surface 6 of the upper cover 63.
Since the height 3a is set to be substantially the same as the height 9c of the upper surface 9c of the connecting portion 9, the height position of the upper surface of the base body 3 from the first caster mounting portion 6 to the support column 8 is It is almost horizontal.

As shown in FIGS. 6 and 8, the column supporting portion 8 has an opening 81 formed in a top wall 91 near the rear end 9b of the connecting portion 9 with its rear open, and an opening 81 formed in the top wall 91. The lower part 21a of the column 21 is opened at the upper part
A fitting portion 82 having a substantially U-shape that is fitted to the outside of the bracket, and a fastener 83 that secures the support column 21 to the fitting portion 82 are provided. The fitting portion 82 is formed by integrally bending a single thin metal plate-like member, and is provided with a bottom wall 821 disposed in a state of being inclined rearward and upward, and upward from the front and rear edges of the bottom wall 821. The front wall 822, 823, which is raised and extended, and a pair of insertion holes 824, through which the fastener 83 pierced in the bottom wall 821 can be inserted. This fitting portion 82
Further, a front horizontal wall 825 extending in a substantially horizontal direction from the front upright wall 822 along the lower surface of the top wall 91 of the connecting portion 9 is provided, and the upper surface of the front horizontal wall 825 is connected to the lower surface of the top wall 91. To the front horizontal wall 82
5. The front and rear upright walls 822 and 823 and the side surfaces of the bottom wall 821 are attached to the connecting portion 9 by abutting the inner surfaces of the left and right side walls 92 of the connecting portion 9 and welding. The support 21 has a hollow square pipe shape, and is integrally provided with a plate nut 211 having a pair of screw holes 211a in the vicinity of the lower end 21a. When the support 21 is attached to the support 8, the lower end 21 a of the support 21 is fitted to the fitting 82, and the insertion hole 8 is formed from the lower surface of the connecting portion 9.
24, the fastener 83 inserted through the plate nut 211
In the screw hole 211a.

With such a configuration, the first caster main body 41 is mounted in the first caster mounting portion 6 in a housed state, so that it is on the use end side of the base main body 3. The height on the front end 3a side can be kept low. In this embodiment, in particular, a thin low-floor caster is used as the first caster, so that the height of the front end 3a side of the base body 2 can be suppressed as low as possible. Therefore, the lower limb space of the use end side of the table A can be ensured widely, and the danger of the user catching a foot on the use end portion of the base 1 can be reduced. Further, since the second caster main body 51 on the non-use end side is exposed and mounted outside the second caster mounting portion 7, the dimensions of the wheels 511 of the second caster main body 51 can be freely set. And a large diameter that can overcome obstacles can be obtained. And, in this embodiment, since the wheels use the two-wheel casters whose diameter is larger than that of the low-floor casters, for example, even when traveling on a carpet with long bristle feet, stable traveling is possible. In addition, when moving, if the second caster 5 is located on the front side in the traveling direction, a step that is difficult to get over with the first caster 4 can be made to get over with the second caster 5 in advance. .

On the other hand, since the first caster main body 41 is mounted in the first caster mounting portion 6 in a housed state, the left and right widths of the mounting portion 6 are adjusted to the caster main body 4.
It is necessary that the first caster mounting portion 6 has a wide left and right width so as not to hinder rotation about the vertical axis. Therefore, if the left and right widths of the entire base body 3 are set in accordance with the left and right width dimensions of the first caster mounting portion 6,
There is a risk of lowering stack efficiency. However,
In the base 1 of the present embodiment, the width of the connecting portion 9 and the width of the second caster mounting portion 7 are narrower than the width of the first caster mounting portion 6. Even when housed in one caster mounting part 6, effective stacking efficiency can be maintained. Moreover, the maintenance of this effective stacking efficiency can be realized by a simple stacking operation in which the bases 1 are superimposed straight together, as shown in FIG. In particular, in this embodiment, the second caster mounting portion 7 side, that is, the narrow side is set to the front side in the traveling direction,
Since the base 1 on the other table A2 is made to enter between the bases 1 on the one table A1 side, the movement and the intrusion operation can be easily performed, and the mobility is good. FIG. 9 is a view in which the table main body 2 is omitted.

The connecting portion 9 and the second caster mounting portion 7 are
Since they have approximately the same left and right width dimensions in a row,
Not only can effective stack efficiency be maintained, but also the appearance of the base 1 can be improved. The height position of the upper surface 63a of the upper cover 63 of the first caster mounting portion 6 and the height position of the upper surface 9c of the connecting portion 9 are continuously set from the first caster mounting portion 6 toward the support column 8. Table A because it is almost horizontal
The space of the lower limb on the use end side can be further expanded.

The first caster 4 is a case 4 for fixing the first caster main body 41 to the first caster mounting portion 6.
The case 42 has a bottomed cylindrical shape with a circular inner peripheral surface and an open lower surface, and houses a disk-shaped pedestal 413 therein so as to be rotatable around a vertical axis. As a result, the first caster 4 can be made thin, and its handling is also easy. Further, the first caster 4 with respect to the first caster mounting portion 6
The mounting area can be increased, a stable mounting state can be obtained, and the range of options for mounting to the first caster mounting portion 6 can be widened.

Since the first caster 4 is provided with an auxiliary wheel 412 for riding on an obstacle mounted on the pedestal 413 so as to be rotatable about a horizontal axis, the diameter of the main wheel 411 is reduced to make the caster thin. Can overcome obstacles of a predetermined size. Since the low casters are used as the first casters 4, it is possible to easily enlarge the lower limb space on the use end side of the table A by using the existing casters.

The second caster 5 has a second support for fixing the second caster main body 51 to the second caster mounting portion 7, and the second support is provided on the base main body. The pivot 52 is attached to the lower end of the spindle 52 so as to be pivotable about a vertical axis.
Is set as small as possible without impairing the mounting strength, and the stacking efficiency can be improved.

As the second caster 5 uses a two-wheel caster having a pair of wheels of a single diameter,
The good running can be easily achieved by using the existing casters generally available. The specific configuration of each unit is not limited to the embodiment described above. For example, in the present embodiment, a case where a low floor caster is used as the first caster and a two-wheel caster is used as the second caster has been described as an example. However, the type of the caster is not limited to this, and the first and second casters are used. The two casters may be casters of the same type. Furthermore, although the two-wheel caster has been described as an example of the second caster, a single-wheel caster may be used as long as the diameter of the wheel is larger than that of the main wheel of the first caster.

Other configurations can be variously modified without departing from the spirit of the present invention.

[0039]

The present invention is embodied in the form described above and has the following effects. That is, this is mounted in a state where at least a part of the first caster main body is housed inside the base main body,
The base body on which the first caster body is mounted has a left-right width dimension that does not hinder rotation of the first caster body around a vertical axis, and a height thereof. Is set lower than the non-use end side, and the second caster main body is mounted in a state of being exposed to the outside of the base main body, so that the lower limb space of the use end side of the furniture can be widely secured. The traveling performance can be improved by increasing the diameter of the wheels of the second caster body.
Further, since the base body to which the second caster body is attached has a narrower planar shape on the side opposite to the use end than on the use end, effective stacking efficiency can be maintained.

If the wheels of the second caster body are larger in diameter than the wheels of the first caster body,
With the casters, obstacles can be easily overcome, and good running becomes possible. If the non-use end side of the base body has substantially the same left and right width dimensions continuously,
Not only can effective stack efficiency be maintained, but the base can also have a good appearance.

The base body has a furniture main body support portion for supporting the furniture main body between the use end and the non-use end, and the height position of the upper surface thereof from the use end side toward the furniture main body support portion is set. If it is substantially horizontal, the lower limb space on the use end side can be made wider. The first caster includes a first support for fixing the first caster main body to the base main body, and the first support and the rotating portion of the first caster main body are vertically connected to each other. If it is rotatable around the axis, and one of them is cup-shaped, and the other is disc-shaped, at least a part of which is accommodated in the one side, The caster 1 can be made thinner, and the caster can be easily handled because the other members constituting the caster are accommodated in the cup-shaped member.

If the first support is cup-shaped, the lower surface of which is open and at least the inner peripheral surface has a circular shape, the mounting area of the first support to the base body is increased and the mounting state is stable. Can be obtained, and the range of selection of a method of attaching to the base body is expanded. If the first caster is provided with an auxiliary wheel for riding on an obstacle mounted on the rotating portion so as to be rotatable around a horizontal axis, even if the wheel has a small diameter and the caster is made thin, An obstacle of a predetermined size can be overcome.

If the first caster is a low floor caster having a flat shape, it is possible to easily expand the lower limb space on the use end side of the furniture by using an existing caster. Second
Is provided with a second support for fixing the second caster body to the base body, the second support being a support shaft hanging down from the base body, and If the rotating part is mounted so as to be rotatable around the vertical axis, the mounting area of the second caster on the base body can be set as small as possible without impairing the mounting strength, and the stacking efficiency can be improved. become.

If a two-wheel caster having a pair of wheels of a single diameter is used as the second caster, it is possible to easily use the existing casters which are generally available to improve the running quality. it can.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing one embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a side view showing a state where the plurality of tables are stacked.

FIG. 4 is a perspective view showing the base.

FIG. 5 is a side view of the same.

FIG. 6 is an exploded perspective view of the same.

FIG. 7 is a bottom view of the same.

FIG. 8 is a sectional view of the same.

FIG. 9 is an explanatory view of the operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Furniture main body (table main body) 3 ... Base main body 3a ... Use end (front end) 3b ... Non-use end (rear end) 4 ... 1st caster 41 ... 1st caster main body 411 ... Wheel (this wheel) ) 412 ... Auxiliary wheels 413 ... Rotating part (pedestal) 42 ... First support (case) 5 ... Second caster 51 ... Second caster body 511 ... Wheel 512 ... Rotating part 52 ... Second support ( Support shaft) 6 First caster mounting portion 7 Second caster mounting portion 8 Furniture body support portion (post support portion) A, A1, A2 Furniture (table) F ... Floor surface

Claims (10)

[Claims] 1. A furniture base capable of supporting a furniture body movably with respect to a floor surface, the base body, a first caster supporting a use end side of the base body, and an anti-use of the base body. A second caster supporting an end side, wherein the first and second casters support wheels that rotate around a horizontal axis, and support the wheels so as to rotate around a vertical axis. And first and second caster bodies each having a rotating portion that is mounted, wherein at least a part of the first caster body is mounted in a state of being housed inside the base body, The base body on which the first caster body is mounted has a left-right width dimension that does not hinder rotation of the first caster body around a vertical axis, and a height thereof. Is set lower than the non-use end side, and the second The main body is mounted with the main body exposed outside the base body.
A base body to which the caster body is attached, wherein a shape in a plan view on a non-use end side is narrower than a use end side. 2. The furniture base according to claim 1, wherein the wheels of the second caster body are larger in diameter than the wheels of the first caster body. 3. The furniture base according to claim 1, wherein the non-use end side of the base body has substantially the same lateral width continuously. 4. A furniture body supporting portion for supporting said furniture body between a use end and a non-use end, wherein a height of an upper surface of said base body from said use end side toward said furniture body support portion. The position is substantially horizontal, The claim 1 characterized by the above-mentioned.
The furniture base according to 2 or 3. 5. The first caster further includes a first support for fixing the first caster body to a base body, and the first support and rotation of the first caster body. Parts are mutually rotatable around a vertical axis, one of them is cup-shaped, and the other is disc-shaped, at least a part of which is accommodated in the one side. 5. Furniture base according to claim 1, 2, 3 or 4. 6. The furniture base according to claim 5, wherein the first support is cup-shaped, the lower surface being open and at least the inner peripheral surface being circular. 7. A vehicle according to claim 1, wherein said first caster main body includes an auxiliary wheel for riding on an obstacle, said auxiliary wheel being mounted on said rotary portion so as to be rotatable around a horizontal axis. ,
The base of furniture according to 3, 4, 5 or 6. 8. A caster according to claim 1, wherein said first caster is a flat caster having a low floor.
A furniture base according to 5, 6, or 7. 9. The second caster further includes a second support for fixing the second caster body to the base body, the second support being suspended from the base body. Wherein the rotating portion is attached to a lower end of the rotating portion so as to be rotatable around a vertical axis.
The furniture base according to 3, 4, 5, 6, 7 or 8. 10. The caster according to claim 1, wherein the second caster is a two-wheel caster having a pair of wheels having a single diameter. Furniture base.